Eating is something that's shied away from even in live action movies / TV shows unless it's crucial to the plot, because watching somebody shovelling food into their gob isn't hugely attractive.

You may think you've watched someone eat in a movie or on a show, but they're more likely to have made 'I am eating' actions and faces without actually putting anything into the top end of their alimentary canal.

Unless having an animated character obviously consume something is central to your project, I'd go with the same approach.

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